cast-iron

a cast-iron promise or arrangement is one that can be trusted completely (always before noun) No new business comes with a cast-iron guarantee of success.

Common Names:

Name	Pronounced	Usage
TÒMas	-	Scottish
ValentÍN	bah-len-TEEN (Spanish)	Spanish, Slovak
Remigio	re-MEE-jo (Italian)	Italian, Spanish, Portuguese
Findlay	-	Scottish
Clarice	['klæris]
Griselda	[gri'zeldə]